-17.52% is the change from 816 to 673
Calculation steps:
[( 673 - 816 ) ÷ 816] x 100 = -17.52%
Formula
Percentage change = [(673 - 816) / 816] x 100
Subtract the new number by the original number
673 - 816 = -143
-143 ÷ 816 = -0.17524509803921567
-0.17524509803921567 x 100 = -17.52%